> a lockdown does not come without its own harmful ramifications: delaying health interventions,
The other harms make sense, but as I understand it, the main point of a pandemic lockdown is to ensure that the healthcare system can cope.
During a pandemic, the lion's share of medical resources are dedicated to dealing with the pandemic. Making the pandemic worse by prematurely easing lockdowns will further delay health interventions.
Hospitals are currently postponing even life-saving procedures if they think their patients can survive a bit longer without them, because they don't have enough intensive care capacity in case things go wrong. That won't get better just because of a policy decision to return society to BAU.
I can have a phone consultation with my GP if I have any health concerns, and if he has concerns, arrangements can be made for an in-person consultation.
I am likely to miss my next regular dental checkup due to the pandemic, and that may mean that what could have been a filling might now be a crown. However, given the proximity of dentists to people's breathing holes, opening them up too early is likely to cause more problems than it solves.